package com.xiaobo.util;

import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;



public class Public_Date {
		  //用来全局控制 上一周，本周，下一周的周数变化   
		  private  int weeks = 0;   
		  private int MaxDate;//一月最大天数   
		  private int MaxYear;//一年最大天数   
		     
		     
		  /**  
		
		   public static void main(String[] args) {   
		       TimeTest tt = new TimeTest();   
		       System.out.println("获取当天日期:"+tt.getNowTime("yyyy-MM-dd"));   
		       System.out.println("获取本周一日期:"+tt.getMondayOFWeek());   
		       System.out.println("获取本周日的日期~:"+tt.getCurrentWeekday());   
		       System.out.println("获取上周一日期:"+tt.getPreviousWeekday());   
		       System.out.println("获取上周日日期:"+tt.getPreviousWeekSunday());   
		       System.out.println("获取下周一日期:"+tt.getNextMonday());   
		       System.out.println("获取下周日日期:"+tt.getNextSunday());   
		       System.out.println("获得相应周的周六的日期:"+tt.getNowTime("yyyy-MM-dd"));   
		       System.out.println("获取本月第一天日期:"+tt.getFirstDayOfMonth());   
		       System.out.println("获取本月最后一天日期:"+tt.getDefaultDay());   
		       System.out.println("获取上月第一天日期:"+tt.getPreviousMonthFirst());   
		       System.out.println("获取上月最后一天的日期:"+tt.getPreviousMonthEnd());   
		       System.out.println("获取下月第一天日期:"+tt.getNextMonthFirst());   
		       System.out.println("获取下月最后一天日期:"+tt.getNextMonthEnd());   
		       System.out.println("获取本年的第一天日期:"+tt.getCurrentYearFirst());   
		       System.out.println("获取本年最后一天日期:"+tt.getCurrentYearEnd());   
		       System.out.println("获取去年的第一天日期:"+tt.getPreviousYearFirst());   
		       System.out.println("获取去年的最后一天日期:"+tt.getPreviousYearEnd());   
		       System.out.println("获取明年第一天日期:"+tt.getNextYearFirst());   
		       System.out.println("获取明年最后一天日期:"+tt.getNextYearEnd());   
		       System.out.println("获取本季度第一天到最后一天:"+tt.getThisSeasonTime(11));   
		       System.out.println("获取两个日期之间间隔天数2008-12-1~2008-9.29:"+TimeTest.getTwoDay("2008-12-1","2008-9-29"));   
		   }   
	   * @param args  
		    */  	      
		      
		   /**  
		       * 得到二个日期间的间隔天数  
		       */  
		   public  String getTwoDay(String sj1, String sj2) {   
		       SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");   
		       long day = 0;   
		       try {   
		        java.util.Date date = myFormatter.parse(sj1);   
		        java.util.Date mydate = myFormatter.parse(sj2);   
		        day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);   
		       } catch (Exception e) {   
		        return "";   
		       }   
		       return day + "";   
		   }   
		 
		 
		   /**  
		       * 根据一个日期，返回是星期几的字符串  
		       *   
		       * @param sdate  
		       * @return  
		       */  
		   public  String getWeek(String sdate) {   
		       // 再转换为时间   
		       Date date = strToDate(sdate);   
		       Calendar c = Calendar.getInstance();   
		       c.setTime(date);   
		       // int hour=c.get(Calendar.DAY_OF_WEEK);   
		       // hour中存的就是星期几了，其范围 1~7   
		       // 1=星期日 7=星期六，其他类推   
		       return new SimpleDateFormat("EEEE").format(c.getTime());   
		   }   
		 
		   /**  
		       * 将短时间格式字符串转换为时间 yyyy-MM-dd   
		       *   
		       * @param strDate  
		       * @return  
		       */  
		   public  Date strToDate(String strDate) {   
		       SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");   
		       ParsePosition pos = new ParsePosition(0);   
		       Date strtodate = formatter.parse(strDate, pos);   
		       return strtodate;   
		   }   
		 
		   /**  
		       * 两个时间之间的天数  
		       *   
		       * @param date1  
		       * @param date2  
		       * @return  
		       */  
		   public  long getDays(String date1, String date2) {   
		       if (date1 == null || date1.equals(""))   
		        return 0;   
		       if (date2 == null || date2.equals(""))   
		        return 0;   
		       // 转换为标准时间   
		       SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");   
		       java.util.Date date = null;   
		        java.util.Date mydate = null;   
		        try {   
		         date = myFormatter.parse(date1);   
		         mydate = myFormatter.parse(date2);   
		        } catch (Exception e) {   
		        }   
		        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);   
		        return day;   
		    }   
		  
		  
		  
		       
		    // 计算当月最后一天,返回字符串   
		    public String getDefaultDay(){     
		       String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		       lastDate.set(Calendar.DATE,1);//设为当前月的1号   
		       lastDate.add(Calendar.MONTH,1);//加一个月，变为下月的1号   
		       lastDate.add(Calendar.DATE,-1);//减去一天，变为当月最后一天   
		          
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		    // 上月第一天   
		    public String getPreviousMonthFirst(){     
		       String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		       lastDate.set(Calendar.DATE,1);//设为当前月的1号   
		       lastDate.add(Calendar.MONTH,-1);//减一个月，变为下月的1号   
		       //lastDate.add(Calendar.DATE,-1);//减去一天，变为当月最后一天   
		          
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		    //获取当月第一天   
		    public String getFirstDayOfMonth(){     
		       String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		       lastDate.set(Calendar.DATE,1);//设为当前月的1号   
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		    // 获得本周星期日的日期     
		    public String getCurrentWeekday() {   
		        weeks = 0;   
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus+6);   
		        Date monday = currentDate.getTime();   
		           
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		       
		       
		    //获取当天时间    
		    public String getNowTime(String dateformat){   
		        Date   now   =   new   Date();      
		        SimpleDateFormat   dateFormat   =   new   SimpleDateFormat(dateformat);//可以方便地修改日期格式      
		        String  hehe  = dateFormat.format(now);      
		        return hehe;   
		    }   
		       
		    // 获得当前日期与本周日相差的天数   
		    private int getMondayPlus() {   
		        Calendar cd = Calendar.getInstance();   
		        // 获得今天是一周的第几天，星期日是第一天，星期二是第二天......   
		        int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK)-1;         //因为按中国礼拜一作为第一天所以这里减1   
		        if (dayOfWeek == 1) {   
		            return 0;   
		        } else {   
		            return 1 - dayOfWeek;   
		        }   
		    }   
		       
		    //获得本周一的日期   
		    public String getMondayOFWeek(){   
		         weeks = 0;   
		         int mondayPlus = this.getMondayPlus();   
		         GregorianCalendar currentDate = new GregorianCalendar();   
		         currentDate.add(GregorianCalendar.DATE, mondayPlus);   
		         Date monday = currentDate.getTime();   
		            
		         DateFormat df = DateFormat.getDateInstance();   
		         String preMonday = df.format(monday);   
		         return preMonday;   
		    }   
		       
		  //获得相应周的周六的日期   
		    public String getSaturday() {   
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks + 6);   
		        Date monday = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		       
		 // 获得上周星期日的日期   
		    public String getPreviousWeekSunday() {   
		        weeks=0;   
		        weeks--;   
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus+weeks);   
		        Date monday = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		  
		 // 获得上周星期一的日期   
		    public String getPreviousWeekday() {   
		        weeks--;   
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7 * weeks);   
		        Date monday = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		       
		    // 获得下周星期一的日期   
		    public String getNextMonday() {   
		        weeks++;   
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7);   
		        Date monday = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		       
		 // 获得下周星期日的日期   
		    public String getNextSunday() {   
		           
		        int mondayPlus = this.getMondayPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE, mondayPlus + 7+6);   
		        Date monday = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preMonday = df.format(monday);   
		        return preMonday;   
		    }   
		       
		       
		       
		    private int getMonthPlus(){   
		        Calendar cd = Calendar.getInstance();   
		        int monthOfNumber = cd.get(Calendar.DAY_OF_MONTH);   
		        cd.set(Calendar.DATE, 1);//把日期设置为当月第一天    
		        cd.roll(Calendar.DATE, -1);//日期回滚一天，也就是最后一天    
		        MaxDate=cd.get(Calendar.DATE);    
		        if(monthOfNumber == 1){   
		            return -MaxDate;   
		        }else{   
		            return 1-monthOfNumber;   
		        }   
		    }   
		       
		  //获得上月最后一天的日期   
		    public String getPreviousMonthEnd(){   
		        String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		      lastDate.add(Calendar.MONTH,-1);//减一个月   
		      lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天    
		      lastDate.roll(Calendar.DATE, -1);//日期回滚一天，也就是本月最后一天    
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		  //获得下个月第一天的日期   
		    public String getNextMonthFirst(){   
		        String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		      lastDate.add(Calendar.MONTH,1);//减一个月   
		      lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天    
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		  //获得下个月最后一天的日期   
		    public String getNextMonthEnd(){   
		        String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		       Calendar lastDate = Calendar.getInstance();   
		      lastDate.add(Calendar.MONTH,1);//加一个月   
		      lastDate.set(Calendar.DATE, 1);//把日期设置为当月第一天    
		      lastDate.roll(Calendar.DATE, -1);//日期回滚一天，也就是本月最后一天    
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		    //获得明年最后一天的日期   
		    public String getNextYearEnd(){   
		        String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		      Calendar lastDate = Calendar.getInstance();   
		      lastDate.add(Calendar.YEAR,1);//加一个年   
		      lastDate.set(Calendar.DAY_OF_YEAR, 1);   
		     lastDate.roll(Calendar.DAY_OF_YEAR, -1);   
		       str=sdf.format(lastDate.getTime());   
		       return str;     
		    }   
		       
		  //获得明年第一天的日期   
		    public String getNextYearFirst(){   
		        String str = "";   
		       SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");       
		  
		      Calendar lastDate = Calendar.getInstance();   
		      lastDate.add(Calendar.YEAR,1);//加一个年   
		      lastDate.set(Calendar.DAY_OF_YEAR, 1);   
		           str=sdf.format(lastDate.getTime());   
		      return str;     
		           
		    }   
		       
		  //获得本年有多少天   
		    private int getMaxYear(){   
		        Calendar cd = Calendar.getInstance();   
		        cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天   
		        cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。   
		        int MaxYear = cd.get(Calendar.DAY_OF_YEAR);    
		        return MaxYear;   
		    }   
		       
		    private int getYearPlus(){   
		        Calendar cd = Calendar.getInstance();   
		        int yearOfNumber = cd.get(Calendar.DAY_OF_YEAR);//获得当天是一年中的第几天   
		        cd.set(Calendar.DAY_OF_YEAR,1);//把日期设为当年第一天   
		        cd.roll(Calendar.DAY_OF_YEAR,-1);//把日期回滚一天。   
		        int MaxYear = cd.get(Calendar.DAY_OF_YEAR);   
		        if(yearOfNumber == 1){   
		            return -MaxYear;   
		        }else{   
		            return 1-yearOfNumber;   
		        }   
		    }   
		  //获得本年第一天的日期   
		    public String getCurrentYearFirst(){   
		        int yearPlus = this.getYearPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE,yearPlus);   
		        Date yearDay = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preYearDay = df.format(yearDay);   
		        return preYearDay;   
		    }   
		       
		       
		  //获得本年最后一天的日期 *   
		    public String getCurrentYearEnd(){   
		        Date date = new Date();   
		        SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式      
		        String  years  = dateFormat.format(date);      
		        return years+"-12-31";   
		    }   
		       
		       
		  //获得上年第一天的日期 *   
		    public String getPreviousYearFirst(){   
		        Date date = new Date();   
		        SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式      
		        String  years  = dateFormat.format(date); int years_value = Integer.parseInt(years);     
		        years_value--;   
		        return years_value+"-1-1";   
		    }   
		       
		  //获得上年最后一天的日期   
		    public String getPreviousYearEnd(){   
		        weeks--;   
		        int yearPlus = this.getYearPlus();   
		        GregorianCalendar currentDate = new GregorianCalendar();   
		        currentDate.add(GregorianCalendar.DATE,yearPlus+MaxYear*weeks+(MaxYear-1));   
		        Date yearDay = currentDate.getTime();   
		        DateFormat df = DateFormat.getDateInstance();   
		        String preYearDay = df.format(yearDay);   
		        getThisSeasonTime(11);   
		        return preYearDay;   
		    }   
		       
		  //获得本季度   
		    public String getThisSeasonTime(int month){   
		        int array[][] = {{1,2,3},{4,5,6},{7,8,9},{10,11,12}};   
		        int season = 1;   
		        if(month>=1&&month<=3){   
		            season = 1;   
		        }   
		        if(month>=4&&month<=6){   
		            season = 2;   
		        }   
		        if(month>=7&&month<=9){   
		            season = 3;   
		        }   
		        if(month>=10&&month<=12){   
		            season = 4;   
		        }   
		        int start_month = array[season-1][0];   
		        int end_month = array[season-1][2];   
		           
		        Date date = new Date();   
		        SimpleDateFormat   dateFormat   =   new   SimpleDateFormat("yyyy");//可以方便地修改日期格式      
		        String  years  = dateFormat.format(date);      
		        int years_value = Integer.parseInt(years);   
		           
		        int start_days =1;//years+"-"+String.valueOf(start_month)+"-1";//getLastDayOfMonth(years_value,start_month);   
		        int end_days = getLastDayOfMonth(years_value,end_month);   
		        String seasonDate = years_value+"-"+start_month+"-"+start_days+";"+years_value+"-"+end_month+"-"+end_days;   
		        return seasonDate;   
		           
		    }   
		       
		    /**  
		     * 获取某年某月的最后一天  
		     * @param year 年  
		     * @param month 月  
		     * @return 最后一天  
		     */  
		   private int getLastDayOfMonth(int year, int month) {   
		         if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8  
		                   || month == 10 || month == 12) {   
		               return 31;   
		         }   
		         if (month == 4 || month == 6 || month == 9 || month == 11) {   
		               return 30;   
		         }   
		         if (month == 2) {   
		               if (isLeapYear(year)) {   
		                   return 29;   
		               } else {   
		                   return 28;   
		               }   
		         }   
		         return 0;   
		   }   
		   /**  
		    * 是否闰年  
		    * @param year 年  
		    * @return   
		    */  
		  public boolean isLeapYear(int year) {   
		        return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);   
		  }   
	} 

